The Sequoyah Unit 1 reactor received a white rating, meaning the plant needs to resolve one or two items of low safety significance.

In December, a third TVA reactor, Watts Bar Unit 1, near Spring City, received a white rating for security issues the NRC declined to make public.

Of the nation’s 104 operating commercial reactors, the NRC found 88 fully met all safety objectives.

“As a fleet they (the TVA reactors) have some issues they need to work to correct,” NRC spokesman Joey Ledford said. “We believe they are working to correct these issues, and the additional oversight that these plants are receiving should help.”

TVA spokesman Ray Golden said the utility’s goal is to have all six reactors rated as top-performing plants but admitted there is still significant work ahead.